微光夜视头盔成像光学系统的设计与研制

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中图分类号： TN253 文献标志码：A

Low-light-level night vision helmet imaging system design and development

ZHANG Junguang'，LUO Yuanyuan，CAO Laishu’，HUANG Qilu，WU Fubao' （1. Xiamen Leading Optics Co.， Ltd.， Xiamen 36100o， China; 2.Quanzhou Normal University， Institute of Photonic Technology， Quanzhou 362ooo， China; nProvincial KeyLaboratory forAdvancedMicro-nanoPhotonics TechnologyandDevices，Quanzhou 362ooo，China）

Abstract： Design of a helmet-mounted low-light-level night vision imaging lens is studied in this paper. This imaging lens has focal length of 23mm ，fieldofviewof 40∘ ， F -numberof0.9.With working wavelength range of 400-1000nm ，the optical distortion of this lens for the full field of view is less than 2% . With the spatial frequency of 53lp/mm ，the modulation transfer function for the full field of view is greater than O.3.and the total length of the optical system is less than 40mm ：A CMOs image sensor with pixel size of 9.5μm is used. The prototype of the helmetmounted low-light-level night vision imaging system is completed and lens performance is evaluated. The research results show that the design has the advantages of large aperture，high resolution， low cost and minimal distortion. The research results can provide low-cost and highperformance low-light-level imaging solutions for military individual night vision devices， police investigation equipment and other application scenarios.

Keywords： low-light-level night vision; imaging lens; aspheric optical element; optical design

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